Condensing steam locomotive



Sept. 23, 1924. 1,509,581

H. BOLTSHAUSER CONDENSING STEAM LOCOMOTIVE Filed May 13 1922 7 Iuz A r aha-M W190 Patented Sept, 23, 19240 UNITED STATES HEINRICH BOLTSHAUSEB, O1 ZURICH, SWITZERLAND.

GONIDENSING STEAM LOCQMOTIVE.

Application filed May 13,

T all whom it may concern.

Be it known that I, Hnrmucn Bower-musna, citizen of the Republic of Switzerland, residing at Hardturmstrasse 19, Zurich,

Switzerland, have invented certain new and useful Improvements in Condensing Steam Locomotives, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to a condensing steam locomotive fitted with a circulation pump for the cooling water for the condenser and provided with a preheater heated by the exhaust steam of a steam engine driving said circulation pump, and it has for its object to simplify such an arrangement and to render its operation economical.

The invention consists in the provision of a pump adapted to draw condensed water as well from the condenser as from the reheater and force it into the boiler of the 10- comotive.

The accompanying partially diagrammatic drawing exemplifies constructions of the invention.

Fig. 1 shows in side elevation with some of the parts in section a steam turbine locomotive provided with. a surface condenser, and

Fig. 2 shows a modification of a detail.

The driving turbine 1 of the locomotive is supplied with steam from the boiler through a pipe not shown. The exhaust steam from the said turbine reaches a surface condenser 2 the cooling water of which is circulated by a pump 4: driven by an auxiliary turbine 3, the condensing water entering the condenser 2 through the pipe 5 and leaving it through the pipe 6. Water is supplied to the pump 4.0 1 through a pipe 7. The exhaust steam of the auxiliary turbine 3 flows into a pre-heater 8 for the boiler feed water. A piston pump 10 is driven by the auxiliary turbine 3 through the gear 11, 12. Condensed water from the surface condenser 2 is drawn through a pipe 13 by the right hand side of the piston of the pump 10 which draws condensed water out of the preheater 8 through a pipe 1 1 with the left hand face of its piston. The condensed water drawn through.

may run continuously, the result being that 1922. Serial No. 560,507.

the pipes 13 and 14 is forced together by the pump 10 through a pipe 16 into the preheater 8 and thence pumped to the steam boiler through a pipe 15.

Thus a single pump 10 is used. to supply the steam boiler with feed water from the surface condenser 2 and the preheater 8. This arrangement has the advantages of be; ing very simple, easy to handle and smooth. in its working and it requires moreover but a comparatively small amount of power to run it.

Since the piston pump 10 absorbs only a small. fraction of the power required to operate the cooling water circulation pump 4-, the number of revolutions of the group formed by the apparatus 3, 4t and 10 is altered but to an unimportant extent when the pump 10 runs idle. Thus the said. pump 10 there no longer exists the danger of flooding the surface condenser 2 or the pre-heater 8, as is the case in arrangements in which the condenser and pre-heater are each connected to a separate pump which becomes operative only when a definite quantity of condensed water is present.

As is shown in Fig. 2 the two products of condensation delivered by the pump 10 may be forced separately into the pre-heater 8 and caused to mix only in the latter from where they are then forced together into the boiler. In Fig. 2 the pipe 16 of the first con structional example is replaced by two pipes 17 and 18.

I claim:

1. A condensing steam locomotive comprising a circulation pump for the cooling water for the condenser, a steam power engine arranged to drive the circulation pump. a pre-heater heated by the exhaust steam of said engine, a pump driven. by said steam power engine driving the circulation pump and arranged to draw through separate pipes condensed water from the condenser and also from said pre-heater and force said water through said pre-heater into a boiler.

2. A condensing steam locomotive, comprising a circulation pump for the cooling water for the condenser, a steam power en- 100 gine arranged to drive the circulation pump, eating with a collecting space for condensed a preheater heated by the exhaust steam of water of the preheeter, all the condensed said steam engine, andapiston pump driven Water drawn into the pump being forced 10 by said steam power englne one side of said through the preheater into tie boiler of the 5 pump communicating With a collecting locomotive.

space for condensed Water of the condenser In testimony whereof I afiix my signature. and the other side of said pump communi- HEINRICH BOLTSHAUSER. 

